package cn.iocoder.yudao.adminserver.franky.java8;

/**
 * @Description:
 * @Author: franky
 * @CreateDate: 2021/8/25 11:42 上午
 * @Version: 1.0
 */
public interface O {
    interface $<A> {
        <B> void $();
    }

    void O($<O> o);

    default O O() {
        return
                $<O>::<O>$;
    }
}